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6870x2 cf issue?

Last response: in Graphics & Displays
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December 7, 2010 12:06:42 PM

Ok so i got 2x 6870 running in cf

both cards work fine alone
3d mark vantage score =26k =gpu
----------------------------------------------------
hysical memory: 8.00 GB
Display adapter: Radeon HD 6800 Series 1024 MB
Driver version: Catalyst 10.10 (8.782.1-101104a-108069E)

==============================================================
TimeDemo Play Started , (Total Frames: 3502, Recorded Time: 92.69s)
!TimeDemo Run 0 Finished.
Play Time: 64.90s, Average FPS: 53.96
Min FPS: 23.73 at frame 78, Max FPS: 74.30 at frame 740
Average Tri/Sec: 7752002, Tri/Frame: 143659
Recorded/Played Tris ratio: 3.63
TimeDemo Play Ended, (1 Runs Performed)
==============================================================

//////////// Summary \\\\\\\\\\\\\ =NONE cross fire

12/08/2010 00:48:44 - Microsoft Windows 7 Ultimate

DirectX 9.0c GAMER 1X @ Map: ambush @ 0 1920 x 1080 AA 0xx
==> Framerate [ Min: 23.73 Max: 74.30 Avg: 53.96 ]
---------------------------
CPU ID: AMD64 Family 16 Model 10 Stepping 0
Operating System: Microsoft Windows 7 Ultimate
Physical memory: 8.00 GB
Display adapter: Radeon HD 6800 Series 1024 MB
Driver version: Catalyst 10.10 (8.782.1-101104a-108069E)

==============================================================
TimeDemo Play Started , (Total Frames: 3502, Recorded Time: 92.69s)
!TimeDemo Run 0 Finished.
Play Time: 69.79s, Average FPS: 50.18
Min FPS: 21.61 at frame 75, Max FPS: 70.86 at frame 2858
Average Tri/Sec: 23891200, Tri/Frame: 476135
Recorded/Played Tris ratio: 1.10

//////////// Summary \\\\\\\\\\\\\ =CROSS FIRE!!!

12/08/2010 01:00:25 - Microsoft Windows 7 Ultimate

DirectX 9.0c GAMER 3X @ Map: ambush @ 0 1920 x 1080 AA 0xx
==> Framerate [ Min: 21.61 Max: 70.86 Avg: 50.18 ]


---- as u can see 1 card nearly performs better than 2 :( 
- i have downloaded 10.10e drivers from ati
-is their anything i can do?
i tried mucking about with
-enable surface format optimization -didn't do anything
-disabled cross fire power settings -enabled or disabled does not change :( 
--pc is
4ghz 1055t down clocked for this test to 3.6
psu 1200w
----or should i just wait for 10.12?
any suggestions welcome

i mean the vantage score looks ok
but just seems crysis is not being affect by other card :( 

More about : 6870x2 issue

Best solution

December 7, 2010 3:35:00 PM

Crossfire has a tendency to work poorly on old games with new cards. Try other games/benchmarks. I use Furmark for easy 1/xfire card comparison.
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December 8, 2010 10:07:47 AM

Best answer selected by viper200.
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December 8, 2010 10:08:58 AM

thanks i ran the heaven benchmark and in single mode got 70 max fps

in cross fire got 170 :D  working perfectly :D DD
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